Circadian rhythm of wrist temperature among shift workers in South Korea: a prospective observational study
Open accessAbstract
Background: Human body temperature varies with circadian rhythm. To determine the effect of shift work on the circadian rhythm of the distal-skin temperature, wrist temperatures were measured. Methods: Wrist-skin temperatures were measured by an iButton® Temperature Logger. It was measured every 3 min for two and eight consecutive working days in the day and shift workers, respectively. Mesor, amplitude, and acrophase were measured by Cosinor analysis. Results: The shift-worker amplitude dropped significantly as the night shift progressed (0.92 to 0.85 °C), dropped further during rest (0.69 °C), and rose during the morning-shift days (0.82 °C). Day workers still had higher amplitudes (0.93 °C) than the morning-shift workers. The acrophase was delayed during the four night-shift days, then advanced during rest days and the morning-shift days. Nevertheless, the morning-shift worker acrophase was still significantly delayed compared to the day workers (08:03 a.m. vs. 04:11 a.m.). Conclusions: The further reduction of wrist-temperature amplitude during rest after the night shift may be due to the signal circadian rhythm disruption. Reduced amplitudes have been reported to be associated with intolerance to shift work. The findings of our study may help to design the most desirable schedule for shift workers.
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Previous human studies have demonstrated diminished temperature amplitude in other populations with disrupted sleep including shift work, metabolic syndrome, and sleep-disordered breathing.
“This is consistent with previous human studies demonstrating diminished temperature amplitude in other populations with disrupted sleep including shift work, metabolic syndrome, and sleep-disordered breathing [[62], [63], [64]].”
From Exercise mitigates sleep-loss-induced changes in glucose tolerance, mitochondrial function, sarcoplasmic protein synthesis, and diurnal rhythms (2021) · cites this paper as [64]
Shift work reduces the amplitude of temperature rhythms.
“Shift work reduces the amplitude of temperature rhythms14”
From Diurnal rhythms of wrist temperature are associated with future disease risk in the UK Biobank (2023) · cites this paper as [14]
Cosinor fits have been validated for use in measuring rhythms in both distal skin temperature and core body temperature.
“Cosinor fits have been validated for use in measuring rhythms in both distal skin temperature and core body temperature14,67.”
From Diurnal rhythms of wrist temperature are associated with future disease risk in the UK Biobank (2023) · cites this paper as [14]
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- Authors
- Jang, T.-W., Kim, H., Kang, S.-H., Choo, S.-H., Lee, I.-S., & Choi, K.-H.
- Affiliations
- Hanyang University (KR)
- Ewha Womans University (KR)
- Veterans Health Service Medical Center (KR)
- Department of Occupational and Environmental Medicine, Sojung Healthcare, Seoul 05368, Korea
- Hankyong National University (KR)
- Taean Environmental Health Center, Taean 32148, Korea
- Corresponding author
- Kim, Hyunjoo
- Venue
- International Journal of Environmental Research and Public Health
- Publisher
- MDPI AG
- Published
- 2017-09-24
- Volume
- 14
- Issue
- 10
- Pages
- 1109
- ISSN
- 1660-4601 (ISSN-L)
- PMC
- PMC5664610
- OpenAlex
- W2759705078
- Cited by
- 21
- References
- 29
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 5 · 2023: 2 · 2022: 1 · 2021: 5 · 2020: 2 · 2019: 2 · 2018: 1
- FWCI
- 1.77
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- International Journal of Environmental Research and Public Health (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- RePEc: Research Papers in Economics (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- The Royal Society of Chemistry’s Journals, Books and Databases (The Royal Society of Chemistry) (submittedVersion)
- Funders
- SK Hynix
- Topics
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
- Health Sciences › Medicine › Physiology › Thermoregulation and physiological responses
- Keywords
- circadian rhythm, wrist temperature, shift work, night shift work, skin temperature, circadian amplitude, acrophase, circadian rhythm disruption, shift scheduling, body temperature
- MeSH terms
- Shift Work Schedule, Adult, Circadian Rhythm, Female, Humans, Male, Skin Temperature, Wrist, Republic of Korea
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